Flushing-valve.



G. A. BROWN.

FLUSHING VALVE.

APPLICATION FILED MAY 13, 1907.

I 913,097. Patented Feb. 23, 1909.

Fly. 2.

STATES PATENT oEEIcE.

GEORGEQVAQBROWN', OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR, BY DIRECT AND nEsNE .AssIGNMENTsoEONE-THIRD :ro-JosErn P. BINGAMAN AND ONE-THIRD T oHAnLEs F. IN'GAMAmBoTH OF PITTSBURG, PENNSYLVANIA.

FLUSKING VALVE.

To; all whom 'it maycomem:

Be it knownthat I, GEORGE A. Bnowx, a citizen of the United States, residing at Allegheny, 'inathe State of" Pennsylvania, have: invented certain new and useful Improvements inwFlushihgsV'alves, of which I structlonzand generally to improve the op:

eration. offiushing valves. These objects and-other -advantages are attained by the construction{illustrated in the 'accoinpany-' ing drawing .whereinv F ignresa -1 and 2 are vertical sections through the valve and casing respectively,

showing :theuvalve. closed and open. Fig. 3 is. horizontal section on the line 3 in Fig. 1. Fig=.. 4 is a detailed section showing a preferred form of the relief valve to coiipcrate with the'main valve of Fig. 1.

It has heretofore been found diflicult or impossible to use the water under heavy.

pressure. direct from; the main for flushing water closets,:and -th1s has been'because of the cliflicultyv of? controlling the movements of; the va'lve-and: preventing its opening too suddenly orichattering or closing too suddenly; and. successfully operating under changingsconditions of the water. It has.

been customary therefore to use a storage tank and generally they have been emptied by siphons inf order to get a limited amount of water'and then to cause automatic stop-- page of the=flow.'- I have obviated such dif- 'ficulties bynse-ofa simple valve attached directly; to the water pipe. Thus from the drawingssit' .wi-ll lie-"seen that the water pipe 4 is'flleddirectlyqintoan enlarged expansion chamber 5 formed in: the valve casing 6,, and thisi-openingis .iclosed oii' from the closet; by'

meanspof j large: hollow cylindrical valve 7 seated in the casingfi upon rubber gaskets} 6 *and-ry6 jas shown in Fig; .1, and may be y:

Specification inf-Letters Patent.

Application filed May 13, 1907. Serial N 0. 373,241.

venient handle 10, which will thrust upward Patented Feb 23, 1909.

provided. with vertical grooves 7" to allow more easy escape of the water as shown in Fig. 4.

In the bottom of the hollow valve 7 there is a small opening closed by a relief valve 8, which'is preferably made as in F ig: 4 at 8 with a rubber gasket seat. The valve 8 normally is closed by thewater and air pressure inside assisted inclosing bya weight 9 upon its link stem 9 or by a spring, as shown in Fig.4. The link9 is operated by any conthe valve 8 until it'is stopped by the collar 11. This will relieve the pressure of air and water that may be in the chambers A and B and the main valve 7 will now rise under balanced pressure, admitting water from the pipe 4 to flush the bowl.

The chamber B is formed by a hollow stem 12 which may conveniently becast as part of the cap 13 of the casing 6. It has a snug fit within the valve 7 and is preferably provided with a series of annulargrooves 12* to form a water packing to make an air-tight joint against sudden movement as well as to prevent grinding by any dirt in the water. The chamber B is normally filled with air and for this reason the valve 7 is prevented from sudden rising but allowed to rise gradually. The air may escape through valve 8 and through the port 14 and by-pass 15 and is regulated by means of a screw 17 in the cap 13 which may be covered with. a small cap '18 as shown. The seating flange 7 of the valve 7 is of less diameter than the interior-of the chamber 0 in the casing 6 sothat when'the valve rises the water or air may escape downward between the valve and casing the casing below also being larger than the valve 7 as shown. lVhen the valve 7 is raised to its upper osition the pressure in chambers A, B an C, are practically equal and the. valve will fall-by gravity: When within ashort distance of its seat and before ,itsbottom makes contact with the annular shoulder 6" or the flange 7 comes in contact with 6, there is a throttling of the. water passing downwardly fromxpipe 4 through conduit 19; theefiect of the-pres sure of incoming water is to force itselfupwardly-throughthe annular passagebetween the shell of the valve and the casing andthis.

will compress"; air in lthe chamber '16 "and while, since the outlet at 19 is larger than.

' the inlet at at there will be free communication with theatmosphere through the bowl of the closet so that air will pass upwardly around the valve and some of it into the port 14. Both the suction inside the valve, and the resistance to throttling of the flushing stream, will prevent the valve from sudden closing, so that there is virtually either a positive or a' negative air cushion against which the valve moves in both directions. This by experiment has been found to prevent water hammer.

In Fig.4 I show a form of relief valve which I prefer, the valve stem 21 having'a spring catch 22 which is engaged by the weighted lever 23 of the. handle 10, and thelength of the arm 23 is so arranged that" when the handle is de ressed the arm 23 moving in an arc may s ide from under the catch 22 and thus release the stem of the relief valve even if the handle 10 be not at once lowered. The valve 8 is then assisted in closing by its own weight or if preferred a spring 20 may be used. By this means the operation of the relief valve isrendered certain. From the above description it will be evident that in'operation the lowering of the handle 10 will first open the relief valve and then gradually raise the main valve and the bowl can be flushed as'often or as long as desired. The movements of the main valve denly upon its seats 6 and 6*. While the invention has been described as for flushing valves for water closets, it will be evident that it may be also used as an ordinary cock without changing anything unless to provides a more convenient handle. It will be noted that this valve may 'be applied directly to the main so as to obviatethe use of a storage tank and that it consists of but essentially; two moving parts and 'no'joints that can col lect dirt. It is extremely cheap and takes up very little room, can be placed in any desired position and can'not'get out of order. Thelvalve has'a gradual and easy movement in both "directions and the device avoidsthe objectiona'ble' collection of stagnant water}; where tanks are usedi- No diaphra'gins or 6 5 rubber parts are necessary and the-valve'l seats take care of themselves. Other advan tages will readily occur to those familiar with the art. I

Havin thus described m invention and e b e I its use, what I claim as new and de sire to secure by Letters Patent,iatheiell6wing 1. The combination of a casing having a side inlet, "a relatively larger outlet'below," and having a chamber above the inlet provided with a hollow guide stem, two valve seats of difi'erent diameter with the larger one above the inlet, a main fvalve nearlyv filling the casing and mounted onthe guide stem to form an air-cushion forthevalve,

the same having aby-pass'from the cushion chamberto the upper casing chamber and means to ventthe air through the valve to allow the same to open. I v 2'. A flushing valve comprising apcasing witha hollow gulde stem, an inlet and a relatively larger outlet, a hollow valve mov-I able onthe stem and practically filling the casing and practically closing theinlet' and closing the outlet when seated, and means to relieve pressure in the valveto allow of its opening by water pressure.

3'. A flushing valve comprising a casing with a hollow guide stem, an inlet and a relatively larger outlet, 'a hollow valve movable. on the stem and practically filling the casing and practically closing the inlet and closing the outlet when seated, and means to relieve pressure in the valve to allow of I its opening by water pressureand-meansfl to accumulate pressure behind'it and close it when the relief opening iscl'os'ed;

4. The combination'of a casing having an inlet, an air-cushion chamber, a hollow stem and a hollow valve thereon having two seats 'in the casing but of slightly smaller diameter than the casing, means to rehev'p-airv pressure in the closed valve on opening it and means to. gradually admit. pressure through the cushion'chamber'to the valve on; 1

closing it, substantially as described. 5. The combination of a casing having a middle valve; chamber provided with a sup- 4 ply port leading thereto and a relatively larger discharge opening leading therefrom, Y

a valve seat surrounding the dischargeopenmg, a 'supplementaljchamber beyond the valve chamber and having -an'-intervening annular valve seat, an inwardly extending hollow guide stem above the seat; aFport leading thereinto from the supplemental chamber, a hollow displacement valve 'engagingsaid guide movable within thevalve ":i chamber With slight clearance and arranged to contact with. said seats, a releasevalve. for thedisplacement :valve, and actuating mechanismtounseat the displacementvalve- '6: A 'high pressure flushing valve comprisin a' casing'having aninlet anda relavely arger open bottom and ontlet; a valve iseat ibelow the inlet, an enlargement and "a 4 fitted on the stem and nearly filling the casing between seats, a relief valve in said mam valve and means to open 1t, and the vvalve stem having a by-pass to the casing enlargement.

In testimony whereof I have hereunder signed my name in the presence of the two subscribed witnesses. 4

GEORGE A. BROWN.

\Vitnesses CHAS. S. LE LEY, F. V. H. CLAY. 

